Shuttle-changing apparatus for automatic looms



2 Sheets-heet 1 IA'VENTOR,

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ATTORNEY.

K. TOYODA Apri124, 192s.

SHUTTLE CHANGING APPARATUS FOR AUTOMATIC LOOMS vFiled Aug. 23. 1926 April 24, 192s.

' K. TOYODA SHUTTLE CHANGING APPARATUS yFOR AUTOMATIC LOOMS 2 Sheets-Sheet 2 Filed Aug. 23. 192e INVENTR.

ATTORNEY.

'Patented Apr. 24, 192s.

UNITMED ASTATES xncii'rao TOYDA, or NAeoYA, JAPAN.

'Saurus-CHANGING APPARATUS' ron ArouArIc Looms.

l Application led August 23, 'Serial No. 130907.

My invention relatesto a shuttle changing front plate ada ted to be opened not bythe y -ngagement of the shuttle but by a. separate lmeans before coming vinto engagement with the shuttle, resulting in a sft operation.

Another object of the invention is the provision of the means whereby the picker is displaced away from the shuttle'when the latter is tobe changed, thus preventing the injury of the-shuttle while beingy removed.

In the accompanying drawings iny which one embodiment of the invention is shown by way of example: A

Figure -1 is a side view cj the apparatus,

Figure 2 a front view, and.

Figure 3a plan thereof.

On the slay 1 is mounted a bearing bracket 2. The front plate 3 of the shuttle box is carried by thearm 4 which is pivoted on the pivot 5 inthe bracket 29 Ai rocking ex tenslon arm 6 is secured to the arm 4 by means of bolts 7.. 'J

8 is the shuttle magazine securely mounted on theloom frame.' Properly guided in the frame, a shuttle. ejecting rod -9 is rovided for ejecting the lowermost one of t e shuttles in the magazine 8. The ejecting rod 9 is connected by .a link 10 to the upper. arm 11 fixed to a horizontal shaft 12 journalled in the frame.. To the shaft 12. is also fixed a lower arm 13,*towhich is comiecteda receiving rod j14. By means of the hanging rod 15 and .by other connecting means, the said receiving rod 14 is operatively connected to the feeler motion device in such a man` ner that it is slightly lifted when the weft is' broken or exhausted,.whereupon it is aci arm 13` is rocked about the axis of the.

tuated by an engaging member (not shown) formed orsecured on the .slay sword. Also Ysecuredto the, shaft 12 is an operating arm 16. K

When the shuttle is to be changed, the receivin rod .14 is actuated Vby the engaging mem eron the slay 1, whereby the lower shaft Thus,

13,-thus operating the ejecting rod Slthrou'gh the upper arm 11 and the link 10, resulting in the lowermost one of the shuttles in the magazine 8 beingejected and propelled to'- ward the shuttle box. At the same time the operating arm 16 on the shaft 12 will be l'ocked downwardly, so that according to v the forward stroke. of the slay the extension `arm 6 will be engaged and pushed by the op- Gonsequently, the front erating arm 16. y y plate 3 of the shuttle box vwill be opened, the arm 4 thereof being rocked about the pivot 5 Thus, it will be seen that the front plate 3 will be opened before it is engaged by the shuttle ejected from the shuttle box, and consequently, Jthe ejected shuttle can be. safely' pushed any resistance.

ounted` on the slay front is a bearing 17 in which a' vertical'operating shaft 18 is- ]'ournalled, which shaft carrying at its upper vend an operating arm 19, and at the` lower two members 20 and 21. Thev outermem-vJ -ber l21 is bent and abuts against the tail-of the check strap 22 for the picking arm. The operating arm 19 and the members 20 and I 21 are normally held 4in the position shown in Figure 3 bythe action of the springs 23 and 24. Thus, the check strap 22 for the picking arm is normally prevented from moving outwardly be ond the predetermined extent, the same eing checked by the bent'portion of the outer lnember 21 During the shuttle changing operatlon, the extension arm 6, being moved by the operatingV arm 16, will engage with and actuate the operatine arm 1.9 on the shaft 18, so that the inner an .outer members 20 and 21 fixed at the lower end will be rocked outwardly'.

check strap 22, permitting the latter to be moved outwardly beyond the normal extent. At the samev time, the inner member 20 will -push the picking arm 25 outwardly, movmg the picker in the direction of the arrow.

shown in Fi re 3,' thereby making a between 'the s uttleand the picker, andt us y permittin' the removal of the shuttle without any hmdrance.

Nearlat the end of the s a-y, that is, V from the magazine passes the entrance of the of the forward 'stroke Ashuttle box, the operating arm 16 will be moved into the position shown in broken lines, and will become disengaged from the extension arm 6, .whereupon the latter arm into theshuttlebox without. Y

the outer memberj21 will release the when the shuttle efected I 6 will be returned to its normal position by the action of the spring 26, closing the front plate )3 of the shuttle box. `Consequently,the operating arm 19 being released from the extension iarm 6, both members 20 and 21 will also be returned to their normal position vby` the action of the springs 23 andy 24, they bent portion of the outer member 21 again holding the tail of the check strap 22 present. invention, in which as described above the fmntplate 3 of the shuttle box is opened before it is engaged by the ejected shuttle. y Thus, it may be observed that according to this invention the guide face at the entrance of the shut-tlc box may b'e'dispensed with, and yet the shuttle may be readily fed into the .shuttle box Without injuring the same.

In the automatic loom hitherto known, there is also a disadvantage that during the shuttle changing operation the removal of 'the shuttle is hindered by the fact thatl the tm of the shuttle is held engaged by the receiving cavity in the picker, and consequently that the shuttle is liable to be injured by the forcible` push of the same when it is re- .moved In this invention, however, such disadvantage may be overcome by displacing the picker outwardly during the shuttle changing operation, thereby shuttle tobe readily removed.

What I claim is :-w y

1. In an automatic loom, the combination of the slay, the shuttle magazine, a shuttlebox having a movable front-Wall, a shuttle ejecting means, a picker, a check therefor, a. pivoted arm carrying said movable frontwall, a spring-controlled extension secured to said arm, a horizontal rock-shaft, means carried thereby for simultaneously operating said shuttle ejecting means and said pivoted arm, a vertical rock-shaft adapted to be rocked by said extension, means on said vertical rock-shaft for releasing said picker, and means on said vertical rock-shaft for moving said picker o ut of. the path of the vfresh shuttle. y

2. In an automatic loom, .the combination of the slay, the shuttle magazine, the shuttlebox having a'movable front-wall, a shuttle ejecting means, a picker, a check therefor, a pivoted alm carrying said movable frontwall, a spring-controlled extension secured to said pivoted arm, a horizontal rock-shaft, means. carried thereby for simultaneously operating said shuttle ejecting means and said pivoted arm, a vertical rock-shaft, an arm mounted thereon and adapted to be engaged by said extension, a membercarried' by said vertical rock-shaft for releasing said picker, and a second member on saidvertical rock-shaft for moving said picker out of the path of the fresh shuttle.

In testimony whereof I affix my signature.

KIICHIRO TOYODA.

releasing the 

